Electricity: conductors and insulators – Overhead – Towers – poles or posts
Reexamination Certificate
2006-02-28
2006-02-28
Patel, Dhiru R. (Department: 2831)
Electricity: conductors and insulators
Overhead
Towers, poles or posts
C174S068300, C174S068100, C138S177000
Reexamination Certificate
active
07005574
ABSTRACT:
A labor saving system, method, and apparatus for connecting or coupling lengths of electric metallic tubing (“EMT”). The invention uses couplings/connectors that have barbs that are designed to engage corresponding indentations on EMT to ensure proper installation. In one aspect, the invention is an EMT having: an EMT inner surface forming an EMT cavity; an EMT outer surface; an EMT first end; and at least one indentation in the EMT outer surface at or near the EMT first end, the indentation adapted to receive a corresponding barb from a sleeve device. In another aspect, the invention is a sleeve device comprising; a sleeve inner surface forming a sleeve cavity adapted to receive an end of an EMT; a sleeve outer surface; a first sleeve end; at least one barb on the sleeve inner surface at or near the first sleeve end, the barb adapted to engage a corresponding indentation on the EMT.
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Cozen O'Connor P.C.
Fein Michael B.
John Maneely Company
Patel Dhiru R.
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